My parents are busy, so I always _____ every Sunday cleaning the house.
His son has poor eyesight because he plays _______ computer games.
_______we were having at the party!
David scored a wonderful goal _____the football match and the team won the match ______.
—Shall we go to the Great Wall on National Day?—It’s a great idea ,__________we don’t have enough money.
The chair is made_____wood and the paper is made _____wood,too